Synchronous motor driven shake



ug- 9 1932- L. HORNBOSTEL 1,870,252

SYNCHRONOUS MOTOR DRIVEN SHAKE Filed Feb. 2, 1951 2 Sheets-Sheet l lllllllll ITI A IIIIII'I'IIIHIIIIIIII!! Aug. 9, 1932. L.. HoRNBosTEL 1,870,252

SYNCHRONOUS MOTOR DRIVEN SHAKE Filed Feb. 2, 1931 2 Sheets-Sheet 2 j g5, 21g. 4.,

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Patented Aug. 9, 1932 UNITED STATES PATENT OFFICE LLOYD HOBNBDSTEL, F BELOIT, WISCONSIN, ASSIGNOR T0 BELOIT IRON WORKS, 0F BELOIT, WISOONSIN, A. CORPORATION 0F WISCONSIN BYNGHBONOUS MOTOR DBIVEN SHARE Application led February 2, 1931. Serial No. 512,893.

This invention relates to a shake for the Fourdrinier part of a paper making machine. In the making of paper, the stock flows from the box to a forming wire. This wire carrying the stock travels over a series of table rolls which are mounted on rails. A deckle strap is mounted above the wire and travels therewith in contact with the stock. A vibrating member is connected to the rails to impart a horizontal motion or shake to the wire and stock.

It is an object of my invention to provide a shake mechanism, the amplitude and frequency of vibration of which, may be adjusted while the machine is in operation.

It is a particular object of my invention to provide a shake which is operated by one or more pairs of synchronous motors each pair of which operates a lever connected to 23 the table rails, and in which one motor of each pair may be so adjusted while the machine is in operation as to control the amplitude of vibration of the shake mechanism.

Other and further objects of this invention will be apparent from the following specification and claims.

My invention (in a preferred form) is described in the following specification and ilau lustrated in the drawings forming a part thereof.

On the drawings:

Figure 1 is a broken plan view of a Fourdrinier table and breast roll mounting including a shaking mechanism embodying my invention.

Figure 2 is a side elevational view of the structure shown in Figure 1.

Figure 3 is a side elevational view of a pair of synchronous motors connected to the shake.

Figure 4 is an end view of the motors in F igure- 3 showing a portion of the table in section.

Figure 5 is a view showing the motors adjusted for maximum vibration.

Figure 6 is a view similar to Figure 5 showing the motors adjusted so as not to vibrate the rails an appreciable amount.

As shown on the drawings:

The drawings illustrate a part ofthe Fourdrinier of a paper making machine comprising a table having a base 1, vertical supports 2 and a horizontal frame 3. Table rails 4 are mounted on the frame 3, as by flexible members 5, which are attachedl at their lower ends to the sides ofthe frame 3 as shown at 6. The members 5 are bolted to the rail 4 as shown at 7. Due to the flexibility of the members 5 the rails 4 may move laterally with respect to the frame 3.

The rails comprise a number of sections 8, 9 and 10, and the sections 8 which are adjacent the drier end of the table are attached at their ends to the frame as by vertical pivots 1l. The sections 9 are connected to the sections 8 by yokes 12 which are adapted to receive tongues 13 on sections 8. The sides of the tongues 13 are rounded so as to allow a pivotal action in the joints. The sections 9 and l0 are connected together bya yoke and tongue in the same manner as the sections 8 and 9.

A breast roll 15 is journalled in bearings flexibly supported by means of spring members from a supporting frame 16. A series of table rolls 17 are j ournalled at intervals in the rails 4 and the base 1 has journalled therein a number of rollers 18.

A forming wire 19 is trained over the table rolls 17, breast roll 15 and the rollers 18, and over a couch roll (not shown) which latter roll is mechanically driven and imparts movement to the forming wire.

Deckle straps 20 are mounted by means of rollers 21 and deckle pulleys 22 (only one of which is shown) over the table and in contact with the forming wire. The motion ofthe forming wire imparts movement to the deckle straps.

I provide sections 9 and 10 of the rails on one side of the table with a number of laterally projecting members 23.

To each of these members there is attached a lever 24 which is pivoted at its middle portion'to the end of the members 23 as by a pin 25. The lever 24 is pivoted at its ends to arms extending from a pair of synchronous motors as will hereinafter be described.

A number of pairs of synchronous motors 26 are mounted on the frame 3 by means of a number of angle plates 27. Upper and lower circular straps 28, the inner sections 29 of which are integral with the angle plate, receive the stator 30 of each of the motors. The outer sections 31 of the straps are bolted to the inner sections at 32 and may be tightened to firmly hold the motors in place.

Shafts 34 extend upwardly from the rotors of the motors, and a spool 35 is eccentrically mounted as at 86 on each shaft. A strap 3 loosely encircles each spool, and each strap has an integral arm 38 extending therefrom towards the frame.

Each lever 24 is pivoted at its ends 39 to a pair of the arms 38 extending from a pair of synchronous motors.

The breast roll 15 is journalled in a frame 16a which is connected to the base frame 16 by flexible members 5a similar to the members 5. A pair of synchronous motors 26a are mounted on the frame 16 and are connected to the frame 16a by a series of levers and eccentrics similar in all respects to those previously described. y y

A worm gear 40 is attached to one of each pair of synchronous motors. A horizontal cylindrical shaft is journalled in bearings formed in bosses 47 provided on the angle plate 27.' Said shaft 45 carries a worm 46 which meshes with the gear 40. The free end of the shaft 45 is provided with a handle 48 whereby the shaft may be revolved with a consequent adjusting of the motor casing.

In operation, the stock iiows from a headbox onto the forming wire, 19. The wire carrying the stock travels over the breast roll and table rolls and about a couch roll (not shown). The' motors 26 revolve the eccentrically mounted spools 35 andby means of the eccentric straps 37 and the lever 24 and the extension member 23 impart a shake to the rails as shown diagrammatically in Figure 5` This shaking motion is imparted to the wire and stock carried-thereon through the agency of the table rolls 17 which are mounted in the rails. This vibratory motion or shake assists the fibers to interweave in all directions instead of owing parallel to the direction of the wire travel, as is well known in the art.

By turning the wheel 48 the casing or stator 30 of one of the motors may be revolved. Ii two synchronous motors are fed from the same source of alternating current their rotors will run at the exact same speed and the rotors will remain running in the same relative position, one to the other, unless the stator or frame' of one of these motors is turned relative to the other. In this shake one of each pair of motors may have its stator or frame turned relative to the stator or frame of the other motor of the pair. This turning of the stator of one motor of a pair results in the changing of the relative position of the running rotors of this pair. Consequently, the motors may be` so adjusted that the eccentrics are in synchronism as shown in Figure 5 or to a point where. the eccentrics are 180 out of synchronisin as shown in Figure 6. When the motors of each pair are in synchronism as shown in Figure 5, the maximum amlitude of vibration is roduced, and when the motors are 180 out o step as shown in Figure 6, there is no appreciable vibration. By revolving the stators 30 to any intermediate degree between the two extremes shown diagrammatically in Figures 5 and 6, the amplitude of vibration may be controlled. It will readily be seen that the adjusting mechanism, that is, the worm 46 and the ring 40, may be utilized while the machine is in operation.

The speed or frequency of the shake mechanism is controlled by varying the frequency of the alternating current supplied to the two synchronous motors. This may be accomplished by any of the well known methods of controlling the frequency of alternating currents as by the use ofga motor generator set.

The amplitude and frequency of vibration of my shake mechanism may thus be varied through a wide range while the machine is in operation, and therefore, through the use of my improved mechanism the interwiving of the fibers may readily be controlled.

The pairs of motors are so arranged along the side of the table rails and the connections between the different sections of rail are such that various combinations and amounts of shake can be obtainedat different points along the rails.

The motors are rigidly secured to the Fourdrinier rails so that in the case of a removable Fourdrinier the motors may be withdrawn with the Fourdrinier structure, thereby eliminating the necessity of disconnecting the motors each time the F ourdrinier is removed.

While I have described a preferred form of my invention, I am aware that many changes may be made in the details of construction and arrangement of the parts, and I therefore do not wish to be limited except as is necessitated by the prior art and the scope of the appended claims.

I claim as my invention:

1. A shake mechanism for a paper making machine comprising forming means for the paper web, means for vibratin said forming means and adjustable means including synchronous motors for controlling the amplitude of vibration of the forming means.

2. A shake mechanism for a paper making machine comprising rails mounted for vibration on a frame, a pair of synchronous motors connected to said rails by means of levers, and means for adjusting one motor relative to the other for controlling the vibration of said rails.

3. A shake mechanism for a paper making machine comprising Aa. frame, rails mounted for vibration on said frame, rolls journalled in said rails, a forming wire trained lover said rolls, means for vibrating said rolls and means including synchronous motors for controlling the amplitude of vibration of said rails.

4. A shake mechanism for a paper making Jmachine comprising a table frame,"resilient members secured to and extending vertically from said frame, rails attached to said resilf ient members, levers pivotally connected to one of said rails, a pair of synchronous motors for each lever, eccentric straps secured to each motor and pivoted to the lever and means forr adjusting one motor with respect to the other.

5. A shake mechanism for a paper making machine comprising a Jframe, rails mounte for vibration on said frame, means including a pair of synchronous motors for vibrating said rail, and means for adjusting said vibrating means.

6. A shake mechanism for a paper making machine comprising a table structure including table rails, resilient members supporting said rails, means including a pair of synchro- Vso nous motors for vibrating said rails and means for adjusting said vibrating means.

7. A shake mechanism for a paper making machine comprising a table structure including resiliently mounted table rails, means including a pair of synchronous motors for vibrating said rails and means for adjusting ono motor with respect to the other for con-- trolling the amplitude of vibration of the table structure.

8. i shake mechanism for a paper making machine comprising a frame, rails mounted for vibration on. said trame, a lever connected to said rails, a pair of synchronous motors eccentrically connected to said lever for -vibrating said rails and means :tor adjusting one motor with respect to the other Vfor controlling the amplitude ot vibration of said rails.

Si s shake mechanism for a paper maln'ng machine comprising a frame, railsmounted for vibration on said frame, a lever connected Ito said rails, a pair of synchronous motors eccentrically connected to said lever for vibrating said rails, a ring gear on one of said motors, and a shaft having a Worm in mesh with said gear for adjusting one motor With respect to the other for controlling the ampli tude of the vibration of said rails.

l0. A shake mechanism for a paper making machine comprising a frame, table rails mounted forvibration on said frame, table rolls journalled in said rails, Web forming means trained over said rolls, a lever connected to said rails, a pair ot synchronous motors eccentrically connected to said lever vfor vibrating said rails, and means for adjusting one motor with respect to the other for controlling the amplitude of vibration of the sha-ke mechanism.

11. A shake mechanism for paper making machines comprising a frame, exible members extending upwardly from said 'f1-ame, rails mounted on said iiexible members, each of said rails comprising a number of jointed sections, a number of levers pivoted to one of said rails, means including a. series of pairs of synchronous motors eccentrically pivoted to said levers for vibrating at least one section of each rail, and means for adjusting one motor of each with respect to the other for controlling the amplitude of the vibration of the rails.

12. A vibration device comprising a lever, synchronous motors eccentrically connected -to the lever and means for adjusting one motor with respect to the other for controlling the amplitude of vibration.

.13. A. vibration device comprising a lever pivoted to an object, a pair` of synchronous motors mounted on the object, an eccentric strap connecting each motor to an end of the lever, and means'tor adjusting one motor with. respect to the other for controlling the amplitude of vibration of the object.

14.-. A vibration device comprising a lever pivot-ed centrally to an object, a pair of synchronous motors mounted on the object, eccentric straps connecting the motors to the opposite ends of the lever, a ring gear s mounted upon the casing of one motor, and a shaft mounted on said object and having a Worm therein in mesh with the ring gear to adjust that motor with respect to the other for controlling the amplitude oi vibration ot the object.

15. A vibration device comprising a lever adapted to be pivoted intermediate its ends to an object to be vibrated and a pair oi' synchronous motors eccentrically connected to the respect-ive ends of said lever.

16. A vibration device comprising a lever adapted to be pivotally connected intermediate its ends to an object to be vibrated, a pair of synchronous motors, eccentric connecting means between the driving shafts of said motors and the ends oi said lever and means adjusting the relative eccentricity oi said connecting means.

17. A. shake mechanism for the forming part or" a paper machine including table rails and table rolls resiliently mounted on a supporting frame, comprising a plurality of pairs of synchronous motors and members eccentrically connected to the driving shafts of each oic said pairs of motors and pivotally connected to said table rails intermediate said eccentric connections.

18. In a Fourdrinier paper machine a table structure comprising jointed sectional table rails pivotally mounted at thecouch roll end, a plurality of'pairs of synchronous motors operatively connected at various points along one of said jointed rails for vibrating said rail at those points and removable members for rendering any of said joints rigid to shake a. desired number 0i said rail sections as a rigid unit.

In testimony whereof I have hereunto sub scribed my name at Beloit, Rock County,

Wisconsin.

LLOYD HORNBOSTEL. 

